Two black-colored, unidentified animals were spotted by over 100 tourists in Lake Tianchi, northeast China’s Jilin Province on August 19, 2007.

The file photo taken by a Chinese researcher for the first time shows the monster of Lake Tianchi emerged on July 21, 2005.

The Changbai Mountain is the highest mountain in Northeast Asia, at 2,189 meters above sea level. Tianchi is honored as the deepest mountain lake and the largest crater lake in China. Legends about the monster hidden in this 373-meter deep lake go back more than a century. There have been more than 30 reported sightings by tourists from home and abroad over the past 20 years. The first reported sighting was in 1903. There are quite a few pictures and videos of this creature, but none are clear enough to give a good enough clue as to what it is. "Some enthusiasts are coming up with computer images of it based on interviews. I do hope this will be helpful to unveil this century-old mystery." said Wu Guangxiao, who is investigating the Tianchi Lake monster.